LTC1968 - LTC1968是 精准宽带宽、RMS 至 DC 转换器
LTC1968是Linear公司的一款RMS-DC 转换产品，LTC1968是 精准宽带宽、RMS 至 DC 转换器，本站介绍了LTC1968的封装应用图解、特点和优点、功能等，并给出了与LTC1968相关的凌力尔特元器件型号供参考。
LTC1968 - 精准宽带宽、RMS 至 DC 转换器
LTC1968 - 精准宽带宽、RMS 至 DC 转换器 - Linear Technology（凌力尔特）
功能描述
The LTC1968 is a true RMS-to-DC converter that uses an innovative delta-sigma computational technique. The benefits of the LTC1968 proprietary architecture, when compared to conventional log-antilog RMS-to-DC converters, are higher linearity and accuracy, bandwidth independent of amplitude and improved temperature behavior.
The LTC1968 operates with single-ended or differential input signals and accurately supports crest factors up to 4. Common mode input range is rail-to-rail. Differential input range is 1VPEAK, and offers unprecedented linearity. The LTC1968 allows hassle-free system calibration at any input voltage.
The LTC1968 has a rail-to-rail output with a separate output reference pin providing flexible level shifting; it operates on a single power supply from 4.5V to 5.5V. A low power shutdown mode reduces supply current to 0.1μA.
The LTC1968 is packaged in the space-saving MSOP package, which is ideal for portable applications.
特点
High Linearity:0.02% Linearity Allows Simple System Calibration Wide Input Bandwidth:Bandwidth to 1% Additional Gain Error: 500kHzBandwidth to 0.1% Additional Gain Error: 150kHz3dB Bandwidth Independent of Input Voltage Amplitude No-Hassle Simplicity:True RMS-DC Conversion with Only One External CapacitorDelta Sigma Conversion Technology Ultralow Shutdown Current:0.1μA Flexible Inputs:Differential or Single EndedRail-to-Rail Common Mode Voltage RangeUp to 1VPEAK Differential Voltage Flexible Output:Rail-to-Rail OutputSeparate Output Reference Pin Allows Level Shifting Small Size:Space Saving 8-Pin MSOP Package应用
True RMS Digital Multimeters and Panel Meters True RMS AC + DC Measurements以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) |
| LTC1968CMS8 | MS-8 | C | $5.21 | $3.95 |
| LTC1968CMS8#PBF | MS-8 | C | $5.21 | $3.95 |
| LTC1968CMS8#TR | MS-8 | C | | $4.01 |
| LTC1968CMS8#TRPBF | MS-8 | C | | $4.01 |
| LTC1968IMS8 | MS-8 | I | $8.80 | $6.60 |
| LTC1968IMS8#PBF | MS-8 | I | $8.80 | $6.60 |
| LTC1968IMS8#TR | MS-8 | I | | $6.66 |
| LTC1968IMS8#TRPBF | MS-8 | I | | $6.66 |
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